dobson



2 Sheets-Sheet l.

Y (No Model.)

B. A. DOBSON 8v W. I. BROMILEY.

GOVEE EOE GAEDING ENGINES.

Patented Aug. 1'7, 1897.

Inzfe n tors.'-

(No Model.) 2 Sheets-Sheet 2. B. A. DOBSON'& W. LVBROMILEY.

COVER FOR GARDING ENGINES.

No. 588,132. Patented Aug. 17,1897.

MMI-1:5515'.

UNITED STATES I PATENT OEEICE.

BENJAMIN ALFRED DOBSON AND WILLIAM ISIIERI/VOOD BROMILEY, OF BOLTON, ENGLAND, ASSIGNORS TO DOBSON dt BARLOW, LIMITED, OF

SAME PLACE.

COVER FOR CARDlNG-ENGINES.

SPEIFICATION forming part of Letters Patent No. 588,132, dated Augustxl", 1897. Application led April 26, 1897. Serial No. 633,957. KNO model.) Patented in England January 1, 1897, No. 39.

To all whont 71T) may concern:

Be it known that We, BENJAMIN ALFRED DoBsoN and WILLIAM IsHERwooD BROMI- LEY, subjects of the Queen of Great Britain, residing at Bolton, in the county of Lancaster, England, have invented certain new and useful Improvements in or Relating to Covers for Carding-Engines, (for which we have obtained Letters Patent in Great Britain, No. 39, bearing date January l, 1897,) and of which the following is a specification.

Our invention relates to the cover employed to inclose the space between the upper surface of the doffer and the main cylinder of a carding-engine. This cover has a hinged door which must be opened for the purpose of grinding and stripping the cylinder, and this may require to be done several times in a day. Vhen by the negligence of the attendant the door it not replaced and the card is put into work again, the stripped waste drops down and conceals the open space. Then when the workman attempts to remove the waste it is caught and carried forward by the wire of the cylinder and in many cases a workman has lost his fingers or even his whole hand. Our invention consists iu preventing the door being left open at any time whenthe cover is in position unless the grinding-roller or stripping-brush is in its working bearings. `We effect this by the mechanism illustrated on the accompanying two sheets of drawings, in which- Figure l is a side elevation, partly in section, of part of the main cylinder and doffer of a carding-engine, showing our improved cover with the door open and the grindingroller in position. Fig. 2 is a front sectional elevation of part of Fig. 1. Figs. 3, 4, and 5 are three diagrammatic views, Fig. 3 showing the improved cover in the working position with the door closed; Fig. 4, the same with the door open and the grinding-roller in position, and Fig. 5 the cover drawn forward to enable the attendant to get at the space between the cylinder and doffer.

Similar letters refer to similar parts throughout the several views.

The cover a is arranged, as usual, to inclose the space between the main cylinder b and doft'er c of the carding-engine and is movable also, as usual, upon the cheeks or side frames d of the doffer by means of the h'andle e, hinged thereto, from the position shown in Figs. l and 3 to the position shown in Fig. 5, and vice versa. The cover d has the door f hinged to it, and according to our invention we applya device to this door in order to prevent it from being left open except when required for stripping or when the grinding-roller g is in position for grinding the card-teeth on the main cylinder, as indicated in Figs. l, 2, and 4. This device, as illustrated, consists of a lever h, the free end of which bears against the outside of the hinged door f. The lever h is fulcrumed to the engine-bende' at j and is weighted, say, for example, by the chain and weight lo, the chain passing over a pulley l on the enginebend z' and always tending to raise the lever h and door f into the position indicated in Fig. 3. When, however, the door f is opened and the grinding-roller gis placed in its usual brackets m, secured by bolts n to the enginebend t', as indicated in Figs. l, 2, and 4, a finger q, suspended from the axle p of the grinding-roller g, bears upon the door f and holds it open against the weight of the lever 7L, but when the grinding-roller g is removed the weighted lever h closes the door automatically. Again, when the whole cover a, is drawn forward by means of the handle e into the position indicatedin Fig. 5, in order to free the space between the cylinder and dolfer, the lever h is powerless to close the door f when opened on account of the end of the lever coming immediately under the hinge of the door, as clearly shown in the said Fig.

Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we claim, and desire to secure by Letters Patent of the United States,

l. In combination, the cylinder, 'the doffer, a coverbetween the cylinder and doffer, a door carried by said cover and means for automatically closing said door, substantially as described.

2. In combination with the cylinder and doer, a movable cover between the cylinder IOO and doier adapted to be drawn forward from its normal position, a door connected to said cover and means for automatically closing` said door when the cover is adjusted to its backward or normal position.

3. In combination with the cylinder and doer, a cover between the same, a door f hinged to the cover and a weighted lever engaging the door to close the same, substantially as described.

4. In combination, the cylindel1 and dofler, the cover, the door thereon, means for closing the door automatically and the grinding-roller with means for holding the door open when the grinding-roller is in normal position.

5. In combination the cylinder, the doffer, the cover, the door thereon, means for closing,` the door automatically, the grinding-roller and the finger carried bythe axle thereof for *holding the door open, substantially as described.

6. In combination the cylinder, the doier, the movable cover adapted to be drawn forward from its normal position, a door carried by the cover, and adapted to be moved forward therewith, and means for automatically closing the door when the coverwith the door is in its rearward or normal position, the said door when drawn forward bythe cover being out of operative engagement with its closingv means, substantially as described.

In witness whereof we have hereunto set our hands in presence of two witnesses.

BEN. ALF. DOBSON. WM. ISHERVVOOD BROMI'LEY, Witnesses:

PERCY En. HASLAM, JOSEPH BENTLEY. 

